左心室收缩时间间期测定在拔牙术中应用的意义

Systolic time intervals of left ventricle in dentoextraction

目的:研究拔牙手术刺激对心血管疾病患者心脏功能的影响,方法:临床确诊的冠心病患者为试验Ⅰ组;临床确诊为高血压合并冠心病的患者为试验Ⅱ组;无心血管疾病的健康拔牙者为对照组.全部患者均在麻药注射前及术中做左心室收缩时间间期（systolictimeinterval,STI）检测，并经统计学处理．结果：试验Ⅰ组与对照组相比各项指标均有显著差异（P＜0．01），试验Ⅱ组与对照组相比,参考意义最大的PEP／LVET值相差显著.结论:①在相同的刺激下心血管疾病患者与正常人相比,心脏应激性差,心功指数变化幅度大;②STI作为拔牙手术中心功监测手段比较直观、客观。

To observe the effects of dentoetraction on systolic time interval (STI) of the patients with cardiovascular diseasesMethod:Patients with coronal heart disease and those with carfiovascular disease and hypertension were grouped asⅠ and Ⅱ respectively STIwas measured in all the patients of group Ⅰ,groupⅡand the control(the cases without cardiovascular disease),before and after local anesthetica.Results:ICT (isovolumic contraction time),PEP(preejection period) and LVET (left ventricularejection time) in group Ⅰ were longer than those in control(P<0.01),PEP/LVET in the control (P<0.05).Conclusion:①On the same stimulation,the patients with cardiovascular disease are less adapt-able to dentoextraction than those without the disease; ② STI measurement can be used to moni-tor the patients with cardiovascular disease dur-ing tooth extraction.